code: def test_get_tensor_empty_idx(karate_gnn, dask_client):
      F, G, N = karate_gnn
      cugraph_store = CuGraphStore(F, G, N, multi_gpu=True)
  
      t = cugraph_store.get_tensor(
          CuGraphTensorAttr(
              group_name="type0", attr_name="prop0", index=None
          )
      )
      assert (
          t.tolist()
          == (torch.arange(17, dtype=torch.float32) * 31).tolist()
      )
  
imports: import cugraph
  from cugraph_pyg.data.cugraph_store import CuGraphTensorAttr, CuGraphEdgeAttr, EdgeLayout
  from cugraph_pyg.data import CuGraphStore
  import cudf
  import dask_cudf
  import cupy
  import numpy
  from cugraph.utilities.utils import import_optional, MissingModule
  import pytest
label_desc: Use image node_id 12 for calling a global function with example usage: test_get_tensor_empty_idx(karate_gnn, dask_client) without return types